1. man, a man
man人類;
a man一個男人 eg:Man will conquer nature.
2. chick, chicken
二者均可指小雞;
chicken還可以當雞肉 eg:The chicken is delicious.
3. telegram, telegraph
當電報解時，telegram指具體的;
telegraph指抽象的. eg:a telegram, by telegraph
4. trip, journey, travel, voyage
travel是最常用的;
trip指短期的旅途;
journey指稍長的旅途;
voyage指海上航行
eg:a three-day trip
